Determination of rate coefficients for fusion-relevant atoms and molecules by modelling and measurement in the boundary layer of TEXTOR

Rate coefficients for the excitation and ionization of neutral as well as singly ionized particles and-–predominantly-–their ratios S(D)/XB, which are important for the conversion of photon into particle fluxes in ionizing fusion boundary plasma, have been modelled and experimentally determined in boundary plasmas for fusion-relevant species such as He I, Li I, C I, B I&II, O I&II, Si I&II, Mo I, W I&II, H2, CH(D), C2.